SORRY< OUT OF STOCK...Miata flywheels are heavy parts designed for optimum street driveability by soaking up some of the power from the Miata engine and putting it in storage in the form of inertia. Although this may be important for transporting the groceries, this driveability comes at the expense of engine response and acceleration. Light weight miata flywheels keep less inertia in storage but the lighter rotating mass provides significantly improved miata engine response and acceleration characteristics. XACT Miata flywheels are certified by ACT to meet SFI Spec. 1.1. This makes XACT Miata Flywheels legal for competition when SFI Spec. 1.1 is required or recommended. XACT Miata flywheels come complete with official SFI sticker and serial number as required for certification. ACT offers what performance enthusiasts need: the benefits of a premium quality light weight aluminum Miata flywheel at a MORE affordable price...in steel. ACT currently manufactures XACT steel Miata flywheels in two versions, ProLite (9 Pounds) for road racing and autocross applications and very quick throttle response, and slightly heavier StreetLite (13 Pounds) for street and drag racing vehicles which may require more inertia. Both ProLite and StreetLite Miata flywheels are precision made from Chrome-moly forgings and feature an induction hardened integral ring gear. All ProLite and StreetLite Miata flywheels are CNC machined, heat treated for strength and precision balanced. Substantial material is left behind the clutch surface area for better heat dissipation and durability while weight savings is made where it matters the most for reduced inertia. In brief, a great Miata flywheel performance bargain.
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